Ignition system
Note. As the illustrations in the information are used for different model years and / or models, certain variations may occur. However, the essential information in the illustrations is always correct.
A check for cylinder leakage (also called "leak down") can be carried out instead of a compression test. Cylinder leakage test
Scheme 444
| CAUTION | The ignition system operates at high ignition charges and produces dangerous voltages in both the low and high voltage circuits. There is dangerous voltage throughout the entire ignition system including connectors etc. |
Conditions
Note. The engine compression must always be checked with wide open throttle (WOT) and engine at operating temperature.
Scheme 445
Scheme 446
Remove (applies to turbocharged engines)
- the charge air pipe over the engine to improve accessibility. Seal the charge air pipe with paper wipe as illustrated.
Remove
- the upper camshaft belt cover.
- the cover over the ignition coils.
- the ignition coils. Mark up and put to one side without disconnecting the connectors.
- the spark plugs.
Note. Separate the connector for the engine speed (RPM) sensor.
Install
Install
- the spark plugs. Tightening torque 30 Nm (22 lb. ft) .
- the ignition coils. Tightening torque 10 Nm (7.4 lb. ft) .
Scheme 447
Install
- the cover over the ignition coils. Tightening torque 8 Nm (6 lb. ft) .
- the upper camshaft belt cover. Tightening torque 8 Nm (6 lb. ft) .
- the disassembled connectors.
Applies only to turbocharged engines
Install the charge air pipe.
Remove the seals.
Tighten the mountings and hose clamps.
Scheme 448
Erase diagnostic trouble codes (DTCs)
Start the engine and check that it functions normally.
Use VIDA to vehicle communication to check which diagnostic trouble codes (DTCs) have been stored.
Erase the diagnostic trouble codes (DTCs).
Check the engine compartment and wipe it clean.